Writing thanks on letter from general manager

Hi,

I'm a Gold HHonors member and I'm staying at the Hilton Moscow Leningradskaya. I received a welcome bottle of wine (small bottle) with some cookies and a letter from the GM.

As I really appreciate these small attentions I wrote a thank you on the letter.

Now I wonder:
- I'm I the only one who does this?
- Do you think this will be appreciated?
- Will they even note this and how do you think they will react on this?

I will write a trip report on this Hotel in the thread about this hotel.
Some short feedback:
- I was really pleased with this bottle of wine and cookies I received
- The location of this hotel is not really good, 45 minutes walk to city centre, 5 minutes to subway station
- Internet works OK
- Swimming pool is OK but pretty small
- Bar service is terrible : 15 minutes wait for a drink after you ordered and they don't remember what you had. (I should have said I had one glass of wine instead of 3). You have another wait of 10 minutes for the bill. Unbelievable.
- More to come...